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    For 8)a You probably will be allowed to say about seeing if two foxes would breed successfully. If they are two different speicies, then they probably will not. If they are the same, they probably will.
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    (Original post by kaylea19)
    ANAEROBIC RESPIRATION!
    1a) what is meant by anaerobic ?(1)
    a) The release of energy by the break down of glucose molecules ( main point needed ---> WITH NO OXYGEN PRESENT

    1b) Use figure 1 to describe what happened during the respiration ( the bar chart ) ? (2)
    a) starts off low lactic acid as runners still breathing in oxygen. Then lactic acid level increases as he runner is intaking oxygen, making the body convert glucose into lactic acid this also causes oxygen debt !!

    1c) how long did the runner run for ? (1)
    a) 1.4/1.5 minutes ( A LOT OF PEOPLE GOT THEM BOTH BECAUSE THE LINE WASN'T VERY ACCURATE )

    1d) How does the increase in rate of blood pressure o the muscle help the athlete? (4)
    a) ( IT GAVE A GRAPH ) - its aerobic respiration , the more oxygen he breathed in the more the blood pressure went to his muscles, also the oxygen made more glucose molecules break down releasing more energy ( possibly making adrenaline hormones e.g. insulin )

    2) PONDWEED QUESTION 6 MARKS ! ( EQUIPMENT GIVEN AS A DIAGRAM )
    a) - taping the pondweed to the ruler
    -placing in beaker with water near window so chlorophyll can absorb sunlight
    -try different temperatures to vary results
    - GIVE A DIFFERENT METHOD EG... water in beaker, place pondweed in water, attach the glass tube to test tube and count after every 1 minute how much oxygen create, put at different temperatures and different distances from light energy etc...

    3a) what does an enzyme work best at - cell membrane - cytoplasm - nucleus ? (1)
    a) cytoplasm

    3ai) what is an enzyme ? (2)
    a) biological catalyst, made from proteins, speeds up chemical reactions

    3b) what organ system is the stomach part of (1)
    a) digestive system

    3bi) what does the epithelial tissue do ? (1)
    a) protects the inner and outer lining of the stomach

    3bii) what does the glandular tissue do ? (3)
    a) produces digestive juices, produces hormones, produces enzymes or secretes them

    MESSAGE ME OR COMMENT THE REST OF THIS QUESTION PLEASE

    4) The maths question - IF YOU HAVE THE ANSWERS COMMENT THEM (3)

    4a) 3 ways to improve the experiment ? (3)
    1 - Use a random sample instead of being specific
    2 - Use a more populated species so you get more varied and larger results
    3 - Take more samples so you have a wider range of results and averages will be easier to predict

    5) the chromosomes are heterozygous so why could he of still got polydactyl ?
    a) heterozygous means the chromosomes are the same so that increases the chances also during mitosis the chromosomes are diploid doubling the chances again and in meiosis the chromosones cross over and swap DNA meaning both chromosones could have the disease.

    5ai) what is the probability of him having polydactyl ?
    a) 1/2 - 50 %


    REST OF QUESTION NOT COMPLETE COMMENT THE ANSWERS AND QUESTIONS...

    6) Give the advantages and disadvantages of using hydrogen peroxide and catalyse ? (2)
    a) 1- ad- catalyse - catalysts can be re-used repeatedly, hydrogen peroxide - it can work towards killing dangerous bacteria
    2- disadvantages - catalyse - catalysts denature some at very low temperature so wouldn't work very well, hydrogen peroxide - it can remain in the milk becoming dangerous to us and it doesn't actually fully kill the bacteria - not effective

    COMMENT THE REST OF THIS QUESTION

    7 ) Don't know if this was the right question, but - what is the process taking place here ? DIAGRM OF A TYPE OF CELL DIVISION GIVEN ... (1)
    a) meiosis

    7b) Organ does this process take place ? (1)
    a) gametes / testes ( either )

    7bi) THIS WAS THE PUNNET TABLE QUESTION .... RED HAIR OR BROWN HAIR (3)
    Father - B -------- mother b
    B BB Bb
    b Bb bb

    COMMENT THE REST OF THIS QUESTION AND THE ANSWERS

    8) How can scientists prove that the foxes are the same species? (2)
    a) looking at tow of the different types of the same species and look at their DNA and genes, observing their appearance ( features ) and how they adapting.

    8ai) How did the grey foxes spread over all 6 countries and exist now? (5)
    a) - it was during the ice age, land would of frozen and close countries could of created land bridges for the foxes to separate
    - Its speciation meaning a change in the environment made species adapt to their new surroundings
    - involve survival of the fittest and how ones that have negative speciation or don't adapt will most likely die or not be able to reproduce

    8b) How are grey foxes able to create completely different species of animal? (2)
    a) because once adapted fully to the new surrounding they are still able to reproduce meaning they can reproduce with the new species of animal in the environment, which means new species will be reproduce and it will start generations of that animal.

    IF I HAVE MISSED ANY THEN PLEASE MESSAGE ME OR COMMENT WHICH ONES I'VE MISSED :-)
    Hi there, can you please delete this as you are misinforming people, most of these answers are all wrong.
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    (Original post by alchima)
    yeah it's mitosis
    There was a diagram that shows a cell division producing sperm cells:
    which is MEIOSIS

    Then a following question asking the formation of an embryo:
    which is MITOSIS
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    (Original post by Wikia)
    Are you sure it's 1.5? I put 1 because it levelled off after 1 minute lol.
    Thats because the athlete had reached his maximum blood flow
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    (Original post by kaylea19)
    ANAEROBIC RESPIRATION!
    1a) what is meant by anaerobic ?(1)
    a) The release of energy by the break down of glucose molecules ( main point needed ---> WITH NO OXYGEN PRESENT

    1b) Use figure 1 to describe what happened during the respiration ( the bar chart ) ? (2)
    a) starts off low lactic acid as runners still breathing in oxygen. Then lactic acid level increases as he runner is intaking oxygen, making the body convert glucose into lactic acid this also causes oxygen debt !!

    1c) how long did the runner run for ? (1)
    a) 1.4/1.5 minutes ( A LOT OF PEOPLE GOT THEM BOTH BECAUSE THE LINE WASN'T VERY ACCURATE )

    1d) How does the increase in rate of blood pressure o the muscle help the athlete? (4)
    a) ( IT GAVE A GRAPH ) - its aerobic respiration , the more oxygen he breathed in the more the blood pressure went to his muscles, also the oxygen made more glucose molecules break down releasing more energy ( possibly making adrenaline hormones e.g. insulin )

    2) PONDWEED QUESTION 6 MARKS ! ( EQUIPMENT GIVEN AS A DIAGRAM )
    a) - taping the pondweed to the ruler
    -placing in beaker with water near window so chlorophyll can absorb sunlight
    -try different temperatures to vary results
    - GIVE A DIFFERENT METHOD EG... water in beaker, place pondweed in water, attach the glass tube to test tube and count after every 1 minute how much oxygen create, put at different temperatures and different distances from light energy etc...

    3a) what does an enzyme work best at - cell membrane - cytoplasm - nucleus ? (1)
    a) cytoplasm

    3ai) what is an enzyme ? (2)
    a) biological catalyst, made from proteins, speeds up chemical reactions

    3b) what organ system is the stomach part of (1)
    a) digestive system

    3bi) what does the epithelial tissue do ? (1)
    a) protects the inner and outer lining of the stomach

    3bii) what does the glandular tissue do ? (3)
    a) produces digestive juices, produces hormones, produces enzymes or secretes them

    MESSAGE ME OR COMMENT THE REST OF THIS QUESTION PLEASE

    4) The maths question - IF YOU HAVE THE ANSWERS COMMENT THEM (3)

    4a) 3 ways to improve the experiment ? (3)
    1 - Use a random sample instead of being specific
    2 - Use a more populated species so you get more varied and larger results
    3 - Take more samples so you have a wider range of results and averages will be easier to predict

    5) the chromosomes are heterozygous so why could he of still got polydactyl ?
    a) heterozygous means the chromosomes are the same so that increases the chances also during mitosis the chromosomes are diploid doubling the chances again and in meiosis the chromosones cross over and swap DNA meaning both chromosones could have the disease.

    5ai) what is the probability of him having polydactyl ?
    a) 1/2 - 50 %


    REST OF QUESTION NOT COMPLETE COMMENT THE ANSWERS AND QUESTIONS...

    6) Give the advantages and disadvantages of using hydrogen peroxide and catalyse ? (2)
    a) 1- ad- catalyse - catalysts can be re-used repeatedly, hydrogen peroxide - it can work towards killing dangerous bacteria
    2- disadvantages - catalyse - catalysts denature some at very low temperature so wouldn't work very well, hydrogen peroxide - it can remain in the milk becoming dangerous to us and it doesn't actually fully kill the bacteria - not effective

    COMMENT THE REST OF THIS QUESTION

    7 ) Don't know if this was the right question, but - what is the process taking place here ? DIAGRM OF A TYPE OF CELL DIVISION GIVEN ... (1)
    a) meiosis

    7b) Organ does this process take place ? (1)
    a) gametes / testes ( either )

    7bi) THIS WAS THE PUNNET TABLE QUESTION .... RED HAIR OR BROWN HAIR (3)
    Father - B -------- mother b
    B BB Bb
    b Bb bb

    COMMENT THE REST OF THIS QUESTION AND THE ANSWERS

    8) How can scientists prove that the foxes are the same species? (2)
    a) looking at tow of the different types of the same species and look at their DNA and genes, observing their appearance ( features ) and how they adapting.

    8ai) How did the grey foxes spread over all 6 countries and exist now? (5)
    a) - it was during the ice age, land would of frozen and close countries could of created land bridges for the foxes to separate
    - Its speciation meaning a change in the environment made species adapt to their new surroundings
    - involve survival of the fittest and how ones that have negative speciation or don't adapt will most likely die or not be able to reproduce

    8b) How are grey foxes able to create completely different species of animal? (2)
    a) because once adapted fully to the new surrounding they are still able to reproduce meaning they can reproduce with the new species of animal in the environment, which means new species will be reproduce and it will start generations of that animal.

    IF I HAVE MISSED ANY THEN PLEASE MESSAGE ME OR COMMENT WHICH ONES I'VE MISSED :-)
    for glandular tissue i said secretes enzymes and gave examples would that be sufficent for 3 marks
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    Just wanna say unlucky to anyone who thought it was meiosis
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    (Original post by kaylea19)
    yeah I asked my teacher and he said you can put both they usually leave the mark scheme quite wide ranged i think x :-)
    Put both form what?
    • Thread Starter
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    (Original post by Mahrez)
    for glandular tissue i said secretes enzymes and gave examples would that be sufficent for 3 marks
    yeah if you justified so you could get 2/3 marks, hope all your other exams go good x
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    I'm pretty sure it was 1 minute , as the flat part of the graph was the oxygen payback when the runner stopped
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    I'm happy I wasn't the only one to wrote 1 haha
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    (Original post by AlfBob)
    It clearly was meiosis it had 4 cells at the bottom
    I put meiosis but my friends seem to have mitosis
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    (Original post by kaylea19)
    ANAEROBIC RESPIRATION!
    1a) what is meant by anaerobic ?(1)
    a) The release of energy by the break down of glucose molecules ( main point needed ---> WITH NO OXYGEN PRESENT

    1b) Use figure 1 to describe what happened during the respiration ( the bar chart ) ? (2)
    a) starts off low lactic acid as runners still breathing in oxygen. Then lactic acid level increases as he runner is intaking oxygen, making the body convert glucose into lactic acid this also causes oxygen debt !!

    1c) how long did the runner run for ? (1)
    a) 1.4/1.5 minutes ( A LOT OF PEOPLE GOT THEM BOTH BECAUSE THE LINE WASN'T VERY ACCURATE )

    1d) How does the increase in rate of blood pressure o the muscle help the athlete? (4)
    a) ( IT GAVE A GRAPH ) - its aerobic respiration , the more oxygen he breathed in the more the blood pressure went to his muscles, also the oxygen made more glucose molecules break down releasing more energy ( possibly making adrenaline hormones e.g. insulin )

    2) PONDWEED QUESTION 6 MARKS ! ( EQUIPMENT GIVEN AS A DIAGRAM )
    a) - taping the pondweed to the ruler
    -placing in beaker with water near window so chlorophyll can absorb sunlight
    -try different temperatures to vary results
    - GIVE A DIFFERENT METHOD EG... water in beaker, place pondweed in water, attach the glass tube to test tube and count after every 1 minute how much oxygen create, put at different temperatures and different distances from light energy etc...

    3a) what does an enzyme work best at - cell membrane - cytoplasm - nucleus ? (1)
    a) cytoplasm

    3ai) what is an enzyme ? (2)
    a) biological catalyst, made from proteins, speeds up chemical reactions

    3b) what organ system is the stomach part of (1)
    a) digestive system

    3bi) what does the epithelial tissue do ? (1)
    a) protects the inner and outer lining of the stomach

    3bii) what does the glandular tissue do ? (3)
    a) produces digestive juices, produces hormones, produces enzymes or secretes them

    MESSAGE ME OR COMMENT THE REST OF THIS QUESTION PLEASE

    4) The maths question - IF YOU HAVE THE ANSWERS COMMENT THEM (3)

    4a) 3 ways to improve the experiment ? (3)
    1 - Use a random sample instead of being specific
    2 - Use a more populated species so you get more varied and larger results
    3 - Take more samples so you have a wider range of results and averages will be easier to predict

    5) the chromosomes are heterozygous so why could he of still got polydactyl ?
    a) heterozygous means the chromosomes are the same so that increases the chances also during mitosis the chromosomes are diploid doubling the chances again and in meiosis the chromosones cross over and swap DNA meaning both chromosones could have the disease.

    5ai) what is the probability of him having polydactyl ?
    a) 1/2 - 50 %


    REST OF QUESTION NOT COMPLETE COMMENT THE ANSWERS AND QUESTIONS...

    6) Give the advantages and disadvantages of using hydrogen peroxide and catalyse ? (2)
    a) 1- ad- catalyse - catalysts can be re-used repeatedly, hydrogen peroxide - it can work towards killing dangerous bacteria
    2- disadvantages - catalyse - catalysts denature some at very low temperature so wouldn't work very well, hydrogen peroxide - it can remain in the milk becoming dangerous to us and it doesn't actually fully kill the bacteria - not effective

    COMMENT THE REST OF THIS QUESTION

    7 ) Don't know if this was the right question, but - what is the process taking place here ? DIAGRM OF A TYPE OF CELL DIVISION GIVEN ... (1)
    a) meiosis

    7b) Organ does this process take place ? (1)
    a) gametes / testes ( either )

    7bi) THIS WAS THE PUNNET TABLE QUESTION .... RED HAIR OR BROWN HAIR (3)
    Father - B -------- mother b
    B BB Bb
    b Bb bb

    COMMENT THE REST OF THIS QUESTION AND THE ANSWERS

    8) How can scientists prove that the foxes are the same species? (2)
    a) looking at tow of the different types of the same species and look at their DNA and genes, observing their appearance ( features ) and how they adapting.

    8ai) How did the grey foxes spread over all 6 countries and exist now? (5)
    a) - it was during the ice age, land would of frozen and close countries could of created land bridges for the foxes to separate
    - Its speciation meaning a change in the environment made species adapt to their new surroundings
    - involve survival of the fittest and how ones that have negative speciation or don't adapt will most likely die or not be able to reproduce

    8b) How are grey foxes able to create completely different species of animal? (2)
    a) because once adapted fully to the new surrounding they are still able to reproduce meaning they can reproduce with the new species of animal in the environment, which means new species will be reproduce and it will start generations of that animal.

    IF I HAVE MISSED ANY THEN PLEASE MESSAGE ME OR COMMENT WHICH ONES I'VE MISSED :-)
    For number 7 it was the last question, which was mitosis as it was asking what happens to the cell in womb to to form an embryo
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    is this the unofficial mark scheme for aqa higher paper?
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    (Original post by 1234student)
    is this the unofficial mark scheme for aqa higher paper?
    Yes
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    Neeerrrddss
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    you're all gay
 
 
 
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